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LWG-4499 flat_set::insert_range specification may be problematic

flat_meowC++23 container adaptorsC++23 container adaptors

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6216 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4497 std::nullopt_t should be comparable

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6215 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4481 Disallow chrono::duration<const T, P>

chronoC++20 chronoC++20 chrono

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6214 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4477 Placement operator delete should be constexpr

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6213 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4553 Add a reserve_hint function to concat_view

LWGLibrary Working Group issueLibrary Working Group issue

rangesC++20/23 rangesC++20/23 ranges

Status: Open.

#6212 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4324 unique_ptr<void>::operator* is not SFINAE-friendly

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6210 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4314 Missing move in mdspan layout mapping::operator()

LWGLibrary Working Group issueLibrary Working Group issue

mdspanC++23 mdspanC++23 mdspan

Status: Open.

#6209 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4259 P1148R0 changed the return values of searching functions of std::basic_string on some platforms

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6208 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4223 Deduction guides for maps are mishandling tuples and references

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6207 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-4090 Underspecified use of locale facets for locale-dependent std::format

formatC++20/23 formatC++20/23 format

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6206 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-3831 Two-digit formatting of negative year is ambiguous

chronoC++20 chronoC++20 chrono

formatC++20/23 formatC++20/23 format

LWGLibrary Working Group issueLibrary Working Group issue

Status: Open.

#6205 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026

LWG-3797 elements_view insufficiently constrained

LWGLibrary Working Group issueLibrary Working Group issue

rangesC++20/23 rangesC++20/23 ranges

Status: Open.

#6204 In microsoft/STL;

· StephanTLavavej opened on Apr 3, 2026